package ezy.lite.util;

import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public final class Encrypt {
    private Encrypt() {

	}

	public static String md5(String content) {
        byte[] hash;
        try {
            hash = MessageDigest.getInstance("MD5").digest(content.getBytes("UTF-8"));
        } catch (NoSuchAlgorithmException e) {
            throw new RuntimeException("MD5 should be supported?", e);
        } catch (UnsupportedEncodingException e) {
            throw new RuntimeException("UTF-8 should be supported?", e);
        }
		return toHexString(hash);
	}

	public static String toHexString(byte[] bytes) {
        StringBuilder hex = new StringBuilder(bytes.length * 2);
        for (byte b : bytes) {
            if ((b & 0xFF) < 0x10)
                hex.append("0");
            hex.append(Integer.toHexString(b & 0xFF));
        }
		return hex.toString();
	}
}